This circuit, found in EDN documentation from the 90's, implements a clamp without signal deformation. The integrated circuit is from that time, uncommon nowadays.
This circuit is from 1968 documentation. We can assemble it with more modern components such as a...
Found in a 90s Silicon Chip documentation this circuit is intended to protect a speaker system in...
The UVTRON tube is an ultraviolet radiation sensor. In this circuit from Radio Electronics from...